/*
 * Copyright (C) 2013 Square, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.herui.sdyu_lib.http.utils;

import android.os.Build;
import android.os.Handler;
import android.os.Looper;

import com.herui.sdyu_lib.utils.LogUtils;

import java.util.concurrent.Executor;
import java.util.concurrent.Executors;


public class Platform {
    public static boolean Use_Android_Platform = true;  // 使用android平台
    private static Platform PLATFORM;

    public static Platform get() {
        if (PLATFORM == null)
            PLATFORM = findPlatform();
        LogUtils.i(PLATFORM.getClass().toString());
        return PLATFORM;
    }

    private static Platform findPlatform() {
        if (Use_Android_Platform) {
            try {
                Class.forName("android.os.Build");
                if (Build.VERSION.SDK_INT != 0) {
                    return new Android();
                }
            } catch (ClassNotFoundException ignored) {
            }
            return new Platform();
        } else
            return new Platform();
    }

    public Executor defaultCallbackExecutor() {
        return Executors.newCachedThreadPool();
    }

    public void execute(Runnable runnable) {
        defaultCallbackExecutor().execute(runnable);
    }

    static class Android extends Platform {
        @Override
        public Executor defaultCallbackExecutor() {
            return new MainThreadExecutor();
        }

        static class MainThreadExecutor implements Executor {
            private final Handler handler = new Handler(Looper.getMainLooper());

            @Override
            public void execute(Runnable r) {
                handler.post(r);
            }
        }
    }

}
